Blade for wind power generator

Abstract

Provided is a blade for a wind power generator comprising: a main spar including: an upper main spar flange and a lower main spar flange whose both ends are protruded towards the front and rear side respectively; a front main spar web and a rear main spar web which are connecting the upper main spar flange and the lower main spar flange; a first body, located in the front side of the main spar, including an inverted D-type rib; and a second body, located in the rear side of the main spar, including a curved rib. The inverted D-type rib includes: a vertical frame; and a block frame extendedly formed from the upper side and the lower side of the vertical frame respectively and convexly formed towards the front side.

The invention claimed is: 
     
       1. A blade for a wind power generator comprising:
 a main spar including: 
 an upper main spar flange and a lower main spar flange whose both ends are protruded towards the front and rear side respectively; 
 a front main spar web and a rear main spar web which are connecting the upper main spar flange and the lower main spar flange; 
 a first body, located in the front side of the main spar, including an inverted D-type rib; and 
 a second body, located in the rear side of the main spar, including a curved rib, wherein 
 the inverted D-type rib comprises: 
 a vertical frame; and 
 a block frame extendedly formed from the upper side and the lower side of the vertical frame respectively and convexly formed towards the front side, wherein, 
 the curved rib comprises: 
 a first vertical frame and a second vertical frame; 
 a first curved frame connecting the upper side of the first vertical frame and the second vertical frame; and 
 a second curved frame connecting the lower side of the first vertical frame and the second vertical frame, wherein 
 the rear side surface of the vertical frame is coupled (bonded) to the front side surface of the front main spar web with an adhesive, and 
 a step formed in the rear side surface of the upper side of the vertical frame is coupled (bonded) to the protruded front side surface and the lower side surface of the upper main spar flange with an adhesive, and 
 a step formed in the rear side surface of the lower side of the vertical frame is coupled (bonded) to the protruded front side surface and the upper side surface of the lower main spar flange with an adhesive, and 
 the front side surface of the first vertical frame is coupled (bonded) to the rear side surface of the rear main spar web with an adhesive, and 
 a step formed in the front side surface of the upper side of the first vertical frame is coupled (bonded) to the protruded rear side surface and the lower side surface of the upper main spar flange with an adhesive, and 
 a step formed in the front side surface of the lower side of the first vertical frame is coupled (bonded) to the protruded rear side surface and the upper side surface of the lower main spar flange with an adhesive. 
 
     
     
       2. The blade for a wind power generator according to  claim 1 , further comprising:
 a rear spar located in the rear side of the second body, wherein 
 the rear spar comprises: 
 an upper rear spar flange and a lower rear spar flange whose one ends are protruded towards the front respectively; and 
 a rear spar web connecting the upper rear spar flange and the lower rear spar flange, wherein 
 the front surface of the rear spar web is coupled (bonded) to the rear side surface of the second vertical frame with an adhesive, and 
 a step formed in the rear side surface of the upper side of the second vertical frame is coupled (bonded) to the protruded front side surface and lower side surface of the upper rear spar flange with an adhesive, and 
 a step formed in the rear side surface of the lower side of the second vertical frame is coupled (bonded) to the protruded front side surface and upper side surface of the lower rear spar flange. 
 
     
     
       3. The blade for a wind power generator according to  claim 2 , comprising:
 a third body located in the rear side of the rear spar; and 
 a trailing edge spar located in the rear side of the third body. 
 
     
     
       4. The blade for a wind power generator according to  claim 3 , further comprising
 a skin covering the first body, the second body, the main spar, the rear spar, the third body and the trailing edge spar. 
 
     
     
       5. The blade for a wind power generator according to  claim 1 , wherein the inverted D-type rib is disposed in multiple numbers in the front side of the main spar along the spanwise direction. 
     
     
       6. The blade for a wind power generator according to  claim 5 , wherein the first body further includes a plurality of C-type covers respectively disposed between the adjacent inverted D-type ribs among the plurality of inverted D-type ribs. 
     
     
       7. The blade for a wind power generator according to  claim 6 , further comprising:
 a rear spar located in the rear side of the second body; 
 a third body located in the rear side of the rear spar; 
 a trailing edge spar located in the rear side of the third body; and 
 a skin covering the plurality of C-type covers, the second body, the main spar, the rear spar, and the third body and the trailing edge spar.